@misc{indiciaebd5c77604232,
  title = {Observer variability in upper gastrointestinal endoscopy.},
  author = {D Cantor and R Midgley and T Imperato and S Yassinger},
  year = {1982},
  url = {https://pubmed.ncbi.nlm.nih.gov/7158247/},
  note = {Source identifier: 7158247}
}